A member of Smash IPP provided a workshop introduction to the background and work of their organisation, which stems from prison abolition and focuses on the 4000 people in the UK serving indeterminate prison sentences.
The video referred to a couple of times in the talk is Vice's "Jailed For Life For Minor Crimes: The UK's Forgotten Prisoners", which can be found here: https://www.youtube.com/watch?v=ldILWJ5BVWM